The effects of a new chilled sand on the microstructure and properties of casting aluminum alloy were investigated. By comparision of the grain size

density and mechanical properties of ZL114 A alloy samples which were prepared in the silicon sand and chilled sand

the effects of the chilled sand were analyzed. The results reveal that the chilled effect of the new chilled sand-Fe sand is remarkable

the density of casting aluminum is increased from 2.62 g/cm

3

to 2.69 g/cm

3

the tensile strength is increased by 2.6%

and the elongation is increased by 87%.